Stefan's formula

In thermodynamics, Stefan's formula says that the specific surface energy at a given interface is determined by the respective enthalpy difference $\mathrm{\Delta }{H}^{*}$. $$\sigma ={\gamma }_0\left(\frac{\mathrm{\Delta }{H}^{*}}{N_{\text{A}}^{1/3}{V}_{\text{m}}^{2/3}}\right),$$ where σ is the specific surface energy, N_A is the Avogadro constant, ${\gamma }_0$ is a steric dimensionless coefficient, and V_m is the molar volume.Template:BSN